'Pump the pedal continuously with the nipple wide open (or removed),enough for air/fluid to pump through.Pump like mad and keep fluid topped up.Every 50 pumps or so do the nipple back up,pump it 20 times or so and retighten (repeat until you get pressure on pedal)'
I might go try this, looks like my cars gonna be stranded here at work tonight! Might be a daft question but i keep the resevoir lid off when im doing this yeah??